Conference Two - Module 5 (Exam 2) 2 Flashcards
Fetal Elements
- FHR Baseline
- FHR Variablity
- FHR Periodic Changes (with contractions)
- Accelerations
- Decelerations
- Early
- Variable
- Late
- Prolonged
External Fetal Monitoring
Uses an ultrasound disc to provide information re FHR baseline, FHR variablity, and periodic changes. The optimal placement is over the fetal back.
Internal Fetal Monitoring
Uses a fetal scalp electrode (FSE) to provide greater detail
- Detects electrical impulses generated by fetal cardiac activity
- Eliminates potential interruptions caused by maternal or fetal movement during labor
- Requires rupture of membranes and minimal cervical dilation
Normal Fetal HR
110-160 BPM
Fetal Bradycardia
<110 BPM persisting for at least 10 minutes
Fetal Tachycardia
>160 BPM for at least 10 minutes
FHR Baseline
Average heart rate (rounded to 5 BPM), measured over at least two minutes within a 10 minute window
Fetal Bradycardia Possible Etiology
- Fetal Hypoxia
- Fetal Sleep Period (greater than or equal to 40 minutes)
Fetal Tachycardia Possible Etiology
- Maternal infectious process
- Maternal Dehydration
Nursing Interventionsfor Fetal Bradycardia and Tachycardia
- Monitor closely
- Increase placental blood flow/oxygenation to fetus
- Side-lyingposition
- O2
- IVF
- Collaborate to determine and address underlying cause
FHR Variability
The interplay between the fetal sympathetic and parasympathetic nervous system
Indicated by oscillations above and below baseline FHR, measured overat least two minutes during a ten-minute window
Moderate Variability
6-25 BPM above and below baseline
Indicates a well-oxygenated fetal nervous system and is considered very strong indicator of fetal wellness
Minimal Variability
less than or equal to 5BPM above and below baseline
Marked Variability
greater than or equal to 26BPM
Minimal Variability Etiology
Less than or equal to 5BPM
- Fetal Sleep Period
- Maternal Narcotic or sedative medication
- Fetal Tachycardia
- Fetal Sepsis
- Impaired Fetal oxygenation/hypoxia